Recently, a customer from England ordered a batch of couplings. The size is 1/4″~2 “, the pressure is 6000#, the material is ASTM A105, the standard is ASME B16.11. After production, we have tested their appearance, size and other aspects and p ...

Stainless steel bellows are widely used in oil, water and gas pipelines, and most of them have a certain pressure. The thin bellows are often need to welded, but it’s difficult because they are thin (about 0.2mm). Welding methods have fusion welding, brazi ...

We are Hebei Haihao group (HH),we got order form Malaysia shipyard for DH36 steel plate with BV certificate . DH36 is a high tensile strength steel.Steel used in shipbuilding and oil platforms, shipbuilding steel DH36 is hull structural steel. DH36 STEEL P ...

Recently, one of our Nigerian customers ordered a batch of seamless steel pipes. The size is 12″, the wall thickness is SCH100, the material is ASTM A106 GR.B, the standard is ASME B36.10. After production, we have tested its size and thickness, and ...

Client give one more flange order about  material S355 JOWP.After the perfect delivery of the steel pipe order, the customer gave the order of flange. Raw materials and steel pipe orders are the same S355 JOWP ( corten A). DNV 3.2 TEST S355 JOWP Flanges DN ...

About 40 days ago, an Italian customer ordered a batch of reducing flanges, mainly 10 “*6”, 900#, SCH40s, SS316 reducing flanges. Today, the production inspection was completed and they were shipped to Italy. Reducing flange is a kind of specia ...

Last quarter, we efficiently completed an order of nearly 250 tons of steel pipe for a new customer in Bangladesh. This order includes seamless steel pipe and ERW steel pipe. Most of the materials are 20 GOST 1050-2013 and standard GOST 10704-91. GOST 1070 ...

S32750 material is a super duplex stainless steel designed for applications requiring excellent strength and corrosion resistance.The following is about the use environment and application field of S32750 material: Corrosion resistance and main use environ ...

The welding performance of duplex stainless steel S32750 has the advantages of both austenitic and ferritic stainless steel. Compared with ferritic stainless steel and austenitic stainless steel, it is neither significantly reduced in plastic toughness due ...

S32750 material is a super duplex stainless steel designed for applications requiring excellent strength and corrosion resistance. S32750 alloy contains 25% chromium, 4% molybdenum and 7% nickel. This high molybdenum, chromium and nitrogen content leads to ...

32750 material is a super duplex stainless steel supplied in the state of hot working and solution annealing. As a super duplex stainless steel, it combines the ideal aspects of austenite and ferrite grades. Higher chromium, molybdenum and nitrogen content ...

Hebei Haihao Group has received for DNV certificate, and the DNV approves and confirms that Hebei haihao complies with international standards, regulations or recognized DNV rules . This provides Hebei haihao group with proof of high quality and safety sta ...

Haihao Group is committed to providing the best quality ASTM A182 F316L flanges and fittings. 316L stainless steel added Mo, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength is particularly good, can be used in ha ...

HEBEI HAIHAO GROUP While serving the high-end market, we also pay strict attention to quality, and conducting product testing in CNAS laboratory with DNV’s most professional team is undoubtedly the best interpretation of our products Laboratory test ...

With the singapore shipyard order,the material is CONTEN A (S355 JOWP ) , we doing test at CNAS lab .Today we learn about DNV 3.2 test . DET NORSKE VERITAS (DNV) is an independent and autonomous foundation whose goal is to protect life, property and the en ...

After the perfect delivery of the DNV 3.2 test S355 JOWP pipe order, the customer gave the order of flange. Raw materials and steel pipe orders are the same S355 JOWP ( corten A). DNV 3.2 Test Result : Chemical composition of the product analysis: C Mn ...

Recently,I received a inquiry form singapore shipyard ,in the inquiry , the material is CORTEN A (S355 JOWP ) , The product is steel pipe in standard ASME B36.10 .  Today we learn about the material Corten A ( S355 JOWP ). Corten A Weathering Steel ASTM Co ...

Today I received a inquiry from Singapore, he need stainless steel sweepolet. Today let’s learn about what’s the sweepolet. What is a Sweepolet? Sweepolet is a contoured, integrally reinforced, butt-weld branch connection with a low stress inte ...

Under the action of capillarity, penetrant penetrates into the surface opening defect;  After removing the excess penetrant on the surface,the penetrant in the defect is absorbed through the capillary action of the imaging agent, forming traces and showing ...

Our company, Hebei Haihao Group, was established in 1982, with nearly 40 years of production experience. In the early days of the establishment of the company, we are committed to providing customers with the source of products, do not let the middlemen la ...